Как подписать объект

Как подписать объект в 3Д пространстве

public Texture2D texture;

public Transform target;

public Camera camera;

public void OnGUI()

{

Vector3 screenPos = camera.WorldToScreenPoint (target.position);

if (screenPos.z > 0)

{

GUI.DrawTexture(new Rect(screenPos.x-25 ,camera.GetScreenHeight()-screenPos.y-25 ,50,50), texture,ScaleMode.ScaleToFit,true);

GUIStyle s = new GUIStyle();

s.alignment = TextAnchor.UpperCenter;

GUI.Label(new Rect(screenPos.x-50 ,camera.GetScreenHeight()-screenPos.y-30, 100,25), "Sphere1",s );

}

}